hdu 1039 Easier Done Than Said?

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1039

Easier Done Than Said?

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)

Total Submission(s): 10919 Accepted Submission(s): 5270

Problem Description
Password security is a tricky thing. Users prefer simple passwords that are easy to remember (like buddy), but such passwords are often insecure. Some sites use random computer-generated passwords (like xvtpzyo), but users have a
hard time remembering them and sometimes leave them written on notes stuck to their computer. One potential solution is to generate "pronounceable" passwords that are relatively secure but still easy to remember.

FnordCom is developing such a password generator. You work in the quality control department, and it's your job to test the generator and make sure that the passwords are acceptable. To be acceptable, a password must satisfy these three rules:

It must contain at least one vowel.

It cannot contain three consecutive vowels or three consecutive consonants.

It cannot contain two consecutive occurrences of the same letter, except for 'ee' or 'oo'.

(For the purposes of this problem, the vowels are 'a', 'e', 'i', 'o', and 'u'; all other letters are consonants.) Note that these rules are not perfect; there are many common/pronounceable words that are not acceptable.



Input
The input consists of one or more potential passwords, one per line, followed by a line containing only the word 'end' that signals the end of the file. Each password is at least one and at most twenty letters long and consists only
of lowercase letters.



Output
For each password, output whether or not it is acceptable, using the precise format shown in the example.



Sample Input

a
tv
ptoui
bontres
zoggax
wiinq
eep
houctuh
end

Sample Output

<a> is acceptable.
<tv> is not acceptable.
<ptoui> is not acceptable.
<bontres> is not acceptable.
<zoggax> is not acceptable.
<wiinq> is not acceptable.
<eep> is acceptable.
<houctuh> is acceptable.

Source
Mid-Central USA 2000



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题目大意：这个题目主要是对字符串进行处理，具体有三个要求：1、至少存在一个元音 2、不能出现连续两个相同的字母，除了oo和ee 3、不能出现三个连续的元音，也不能出现三个连续的辅音。

详见代码。

#include<iostream>
#include<cstring>
#include<cstdio>

using namespace std;

int num[30]={0};

int main()
{
    num['a'-'a']=1;
    num['e'-'a']=1;
    num['i'-'a']=1;
    num['o'-'a']=1;
    num['u'-'a']=1;
    char str[5000];
    while(~scanf("%s",&str),strcmp(str,"end")!=0)
    {
        int s=0;
        int flag=0;
        int len=strlen(str);
        for(int i=0;i<len;i++)
        {
            if(num[str[i]-'a']==1)
                s++;
            if(i>0)
            if(str[i]!='o'&&str[i]!='e'&&str[i]==str[i-1])
                flag=1;
            if(i>1)
            if(num[str[i]-'a']==num[str[i-1]-'a']&&num[str[i]-'a']==num[str[i-2]-'a'])
                flag=1;
        }
        if(s==0)flag=1;
        if(flag==0)
        printf("<%s> is acceptable.\n",str);
        else
            printf("<%s> is not acceptable.\n",str);
    }
    return 0;
}